1
Expert solutions
BIO 2301 Exam 1 Questions and Answers
(100% Correct Answers) Already Graded A+
The following beaker of solution is .15 M of NaCl. how many osmoles are
in the solution
✓✓ .3 Osmoles
Which of the following will cause a neurotransmitter to be released from a
neuron
✓✓ voltage gated channels allow calcium to enter the presynaptic axon terminal
simple diffusion is "simple" because particles moving need no assistance or
helpers to get across the membrane due to the fact that these particles are
usually polar, large, and lipid insoluble.
✓✓ false
regulation of blood glucose level is an example of
✓✓ negative feedback mechanism
how would osmolarity of a solution change if water, but not solutes, was
added?
✓✓ the osmolarity would decrease
what is the normal osmolarity of plasma
✓✓ 300 mOsm or .3 M
The movement of particles across a cell membrane during simple diffusion
is driven by differences in concentration across the membrane.
✓✓ True
A person is given an IV of distilled water. What will happen to his red
blood cells?
,2
Expert solutions
✓✓ hemolysis
A solution of glucose that is 0.3 M is iso-osmolar and isotonic.
✓✓ true
The effect of oxytocin on parturition or labor is an example of:
✓✓ positive feedback mechanism
A cell is placed in to a solution. Upon microscopic inspection of the cell,
there appears to be no noticeable change in shape or size to the cell. What
type of solution has this cell been placed?
✓✓ isotonic
A sample of blood is added to a .6 M solution of Glucose. What effect
would you expect to see upon the individual red blood cells?
✓✓ The cells would shrink from movement of intracellular water out of the cells.
All of the following concerning Norepinephrine is true except:
✓✓ Increases blood vessel diameter in blood vessel supplying kidneys, liver, and
digestive system
Through which of the following does a neurotransmitter alter the
membrane potential of a dendrite or postsynaptic cell?
✓✓ ligand gated channels
Which is true of PNS nerve regeneration?
✓✓ If only the axon is destroyed, regeneration may occur
Which of the following is an adrenergic receptor which is involved with
dilating the blood vessels of the heart (coronary blood vessels)?
✓✓ beta
Which type of Na+ channel is primarily found along the axon?
, 3
Expert solutions
✓✓ Voltage gated
This portion of the nervous system includes the brain and spinal cord.
✓✓ CNS
The projections from a neuron that are usually highly branched are the:
✓✓ Dendrites
This division of the nervous system is largely voluntary.
✓✓ somatic
Which of the following neurotransmitters is involved in neural processes
which make pain?
✓✓ Substance P
A current that causes a resting membrane potential of -70 mv to go to -90
mv is described as:
✓✓ Hyperpolarizing
An IPSP or EPSP occurs on which part of a neuron?
✓✓ Dendrite
Which of the following receptors is directly involved in causing skeletal
muscle contraction?
✓✓ Nicotinic
Receptors for the neurotransmiter secreted by a neuron are often found on
the axon terminals of the presynatpic cell in order to facilitate which of the
following?
✓✓ increase reuptake and recycling of neurotransmitters
Schwann cells form myelin sheaths around the large nerve fibers in:
Expert solutions
BIO 2301 Exam 1 Questions and Answers
(100% Correct Answers) Already Graded A+
The following beaker of solution is .15 M of NaCl. how many osmoles are
in the solution
✓✓ .3 Osmoles
Which of the following will cause a neurotransmitter to be released from a
neuron
✓✓ voltage gated channels allow calcium to enter the presynaptic axon terminal
simple diffusion is "simple" because particles moving need no assistance or
helpers to get across the membrane due to the fact that these particles are
usually polar, large, and lipid insoluble.
✓✓ false
regulation of blood glucose level is an example of
✓✓ negative feedback mechanism
how would osmolarity of a solution change if water, but not solutes, was
added?
✓✓ the osmolarity would decrease
what is the normal osmolarity of plasma
✓✓ 300 mOsm or .3 M
The movement of particles across a cell membrane during simple diffusion
is driven by differences in concentration across the membrane.
✓✓ True
A person is given an IV of distilled water. What will happen to his red
blood cells?
,2
Expert solutions
✓✓ hemolysis
A solution of glucose that is 0.3 M is iso-osmolar and isotonic.
✓✓ true
The effect of oxytocin on parturition or labor is an example of:
✓✓ positive feedback mechanism
A cell is placed in to a solution. Upon microscopic inspection of the cell,
there appears to be no noticeable change in shape or size to the cell. What
type of solution has this cell been placed?
✓✓ isotonic
A sample of blood is added to a .6 M solution of Glucose. What effect
would you expect to see upon the individual red blood cells?
✓✓ The cells would shrink from movement of intracellular water out of the cells.
All of the following concerning Norepinephrine is true except:
✓✓ Increases blood vessel diameter in blood vessel supplying kidneys, liver, and
digestive system
Through which of the following does a neurotransmitter alter the
membrane potential of a dendrite or postsynaptic cell?
✓✓ ligand gated channels
Which is true of PNS nerve regeneration?
✓✓ If only the axon is destroyed, regeneration may occur
Which of the following is an adrenergic receptor which is involved with
dilating the blood vessels of the heart (coronary blood vessels)?
✓✓ beta
Which type of Na+ channel is primarily found along the axon?
, 3
Expert solutions
✓✓ Voltage gated
This portion of the nervous system includes the brain and spinal cord.
✓✓ CNS
The projections from a neuron that are usually highly branched are the:
✓✓ Dendrites
This division of the nervous system is largely voluntary.
✓✓ somatic
Which of the following neurotransmitters is involved in neural processes
which make pain?
✓✓ Substance P
A current that causes a resting membrane potential of -70 mv to go to -90
mv is described as:
✓✓ Hyperpolarizing
An IPSP or EPSP occurs on which part of a neuron?
✓✓ Dendrite
Which of the following receptors is directly involved in causing skeletal
muscle contraction?
✓✓ Nicotinic
Receptors for the neurotransmiter secreted by a neuron are often found on
the axon terminals of the presynatpic cell in order to facilitate which of the
following?
✓✓ increase reuptake and recycling of neurotransmitters
Schwann cells form myelin sheaths around the large nerve fibers in:
